docs: def cli(env, identifier, purge):
      """Delete a placement group.
  
      Placement Group MUST be empty before you can delete it.
  
      IDENTIFIER can be either the Name or Id of the placement group you want to view
      """
      manager = PlacementManager(env.client)
      group_id = helpers.resolve_id(manager.resolve_ids, identifier, 'placement_group')
  
      if purge:
          placement_group = manager.get_object(group_id)
          guest_list = ', '.join([guest['fullyQualifiedDomainName'] for guest in placement_group['guests']])
          if len(placement_group['guests']) < 1:
              raise exceptions.CLIAbort('No virtual servers were found in placement group %s' % identifier)
  
          click.secho("You are about to delete the following guests!\n%s" % guest_list, fg='red')
          if not (env.skip_confirmations or formatting.confirm("This action will cancel all guests! Continue?")):
              raise exceptions.CLIAbort('Aborting virtual server order.')
          vm_manager = VSManager(env.client)
          for guest in placement_group['guests']:
              click.secho("Deleting %s..." % guest['fullyQualifiedDomainName'])
              vm_manager.cancel_instance(guest['id'])
          return
  
      click.secho("You are about to delete the following placement group! %s" % identifier, fg='red')
      if not (env.skip_confirmations or formatting.confirm("This action will cancel the placement group! Continue?")):
          raise exceptions.CLIAbort('Aborting virtual server order.')
      cancel_result = manager.delete(group_id)
      if cancel_result:
          click.secho("Placement Group %s has been canceld." % identifier, fg='green')